Monday, July 29, 2013

Mining "gas" can not disregard "water"

China Energy Network Han Xiaoping, chief information officer, believes that "there is no independent  shale gas  development and technology is an extension of oil extraction technology." China needs foreign capital not only at this stage, but also needs foreign technology, "emphasis is not on prospecting, drilling that the United States in this respect is more advanced."
Hydraulic fracturing technology is used widely in shale gas development tools, mainly in high-pressure liquid injection drilling, making rock split, then high-pressure liquid Proppant  hold cracks, making it a high-speed directional drilling of oil and gas permeation path .
Working Committee of the Yangtze River Yangtze River Academy of Sciences, told reporters that Chen Jin, shale gas requires a lot of water, if not to improve the reuse of water, the local water situation will certainly have some impact, "not a single place able to withstand such a large amount of water. "
According to the U.S. Department of Energy statistics, the use of hydraulic fracturing, a shale gas drilling average water consumption of up to 1.5 million cubic meters. This calculation, it is assumed by 1000 drilling exploration in the Sichuan Basin, 1.5 billion cubic meters of shale gas, water consumption reached 170 million cubic meters, equivalent to the amount of the Sichuan Basin underground mineable resources of 1.1%. "Sichuan is the relative scarcity of water resources in the Yangtze River Basin blocks, there is a seasonal water shortages." Shale gas could impact on water resources, Chen Jin is not without concern.
"At the current development trend, 'second five' plan 6 billion cubic meters of the target is not low, there is a certain degree of difficulty to complete, but if all goes well, still have a chance." Li Liang believes that "Shell publicly declared to be in a year China invested $ 1 billion to develop shale gas, to some extent also in urging the Government to introduce relevant policies. "

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